linux-kernel - [PATCH v2] media: ov7740: use SCCB regmap

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Date:   Thu,  6 Aug 2020 21:18:27 +0530
From:   Raag Jadav <raagjadav@...il.com>
To:     linux-media@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     wsa+renesas@...g-engineering.com, jacopo@...ndi.org,
        akinobu.mita@...il.com, sakari.ailus@...ux.intel.com,
        mchehab@...nel.org, Raag Jadav <raagjadav@...il.com>
Subject: [PATCH v2] media: ov7740: use SCCB regmap

Make use of SCCB APIs for regmap operations.
Remove i2c_check_functionality as devm_regmap_init_sccb
does it for us.

Signed-off-by: Raag Jadav <raagjadav@...il.com>
---
Changes since v1:
- Changed commit message.
- Added SCCB config for ov7740.

 drivers/media/i2c/Kconfig  |  2 +-
 drivers/media/i2c/ov7740.c | 10 +---------
 2 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index da11036..c7d5722 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -1001,7 +1001,7 @@ config VIDEO_OV7670
 config VIDEO_OV7740
 	tristate "OmniVision OV7740 sensor support"
 	depends on I2C && VIDEO_V4L2
-	select REGMAP_I2C
+	select REGMAP_SCCB
 	help
 	  This is a Video4Linux2 sensor driver for the OmniVision
 	  OV7740 VGA camera sensor.
diff --git a/drivers/media/i2c/ov7740.c b/drivers/media/i2c/ov7740.c
index 732655f..5832461 100644
--- a/drivers/media/i2c/ov7740.c
+++ b/drivers/media/i2c/ov7740.c
@@ -1068,13 +1068,6 @@ static int ov7740_probe(struct i2c_client *client)
 	struct v4l2_subdev *sd;
 	int ret;
 
-	if (!i2c_check_functionality(client->adapter,
-				     I2C_FUNC_SMBUS_BYTE_DATA)) {
-		dev_err(&client->dev,
-			"OV7740: I2C-Adapter doesn't support SMBUS\n");
-		return -EIO;
-	}
-
 	ov7740 = devm_kzalloc(&client->dev, sizeof(*ov7740), GFP_KERNEL);
 	if (!ov7740)
 		return -ENOMEM;
@@ -1091,7 +1084,7 @@ static int ov7740_probe(struct i2c_client *client)
 	if (ret)
 		return ret;
 
-	ov7740->regmap = devm_regmap_init_i2c(client, &ov7740_regmap_config);
+	ov7740->regmap = devm_regmap_init_sccb(client, &ov7740_regmap_config);
 	if (IS_ERR(ov7740->regmap)) {
 		ret = PTR_ERR(ov7740->regmap);
 		dev_err(&client->dev, "Failed to allocate register map: %d\n",
@@ -1100,7 +1093,6 @@ static int ov7740_probe(struct i2c_client *client)
 	}
 
 	sd = &ov7740->subdev;
-	client->flags |= I2C_CLIENT_SCCB;
 	v4l2_i2c_subdev_init(sd, client, &ov7740_subdev_ops);
 
 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
-- 
2.7.4